<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8"/>
    <title>图片插入练习</title>

</head>
显示1.png：<img src="../../1.png"  width="100px"><br>
显示2.png：<img src="../2.png"  width="100px"><br>
显示3.png：<img src="3.png" width="100px"><br>
显示4.png：<img src="c/4.png"  width="100px"><br>
显示5.png：<img src="c/d/5.png" width="100px">

</body>
</html>